What "Come Behold the Wondrous Mystery" means
There is a particular quality of attention that the word "behold" requires. It is not the glance of recognition. It is the sustained gaze of someone who has stopped moving because what is in front of them is worth stopping for. Matt Boswell's arrangement of this hymn begins with that word, and it does not back away from what the word demands.
The wondrous mystery the song names is the whole sweep of the gospel: God becoming man, the Son taking on flesh in a specific body at a specific point in history, moving toward a cross that He knew was coming, going into the ground, coming out of the ground on the third day, and now reigning until every enemy is placed beneath His feet. That is not a metaphor.
The word "mystery" here is not an evasion. Paul uses it in Colossians 1:27: "Christ in you, the hope of glory." The mystery is that the God of the universe chose to be present inside the life of a person. That is the wondrous part.
Boswell's Reformed theological instincts shape the song without making it inaccessible. The grace is particular. The cross is substitutionary. The resurrection is bodily. But none of that is delivered as doctrine drill. It is delivered as wonder, which is the right mode for the kind of truth this song is carrying.
What this song does in a room
This song creates a contemplative gravity that pulls the room inward and downward at the same time. Inward, because the theology is personal. Downward, because it is weighty. That is not a bad combination. In fact, it is exactly the combination a congregation needs when they have been carrying things all week that they have not had language for.
In a room of worship leaders specifically, this song tends to operate as a reminder of why the work matters. When the week has been difficult (conflict on the team, criticism from a congregant, the slow erosion that comes from serving too long without being served), a song like this interrupts the exhaustion with something larger. The mystery it names is the thing that makes the Sunday worth doing.
For a general congregation, the song produces a quality of unified attention that is rare. People who would not typically describe themselves as theologically engaged often find that this song lands somewhere deep anyway, because the melody carries the theology gently enough that the defenses come down. By the third chorus, the room often sounds different: fuller, steadier, less performed. That is the song working.
The key of E and the tempo at 76 BPM give it just enough forward movement to feel alive without feeling rushed. There is a gravitational pull to the song that increases as it moves through its verses, and most rooms feel that pull before they can name it.
What this song is saying about God
This song is saying that God is not at a safe distance from human suffering. The incarnation it describes is a move toward, not away from. The Son entered the conditions that His creatures were living in (death, grief, limitation, temptation) and He did not exit those conditions early. He stayed until the cross.
It is saying that the cross was not a plan B. The song presents it as the center of what God intended from before the foundation of the world. The death of Christ was not a tragedy corrected by the resurrection. It was the planned resolution, and the resurrection was its confirmation. God did not improvise salvation. He accomplished it.
The song is also saying that what Christ did is sufficient. Not supplementary. The grace it describes is not grace that begins something you must complete. The mystery it names is complete in itself, and the worshiper's only role is to receive it and look at it and keep looking. That is the posture the song keeps returning to.
There is also a communal dimension here. The invitation to "come behold" is plural. You are not being invited to have a private religious experience. You are being invited to see something together, in community, with other people who also need to see it. The song carries an ecclesial weight that rewards singing it in a room full of people rather than alone.
Scriptural backbone
Colossians 1:26-27 sits behind the entire song: "the mystery that has been kept hidden for ages and generations, but is now disclosed to the Lord's people. To them God has chosen to make known among the Gentiles the glorious riches of this mystery, which is Christ in you, the hope of glory." The song is an extended meditation on this text without ever quoting it.
The cross section connects to Isaiah 53:5: "But he was pierced for our transgressions, he was crushed for our iniquities; the punishment that brought us peace was on him, and by his wounds we are healed." This is the theological backbone of the substitution the song describes.
The resurrection and reign connect to 1 Corinthians 15:20-22: "But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep. For since death came through a man, the resurrection of the dead comes also through a man. For as in Adam all die, so in Christ all will be made alive." The song places the congregation inside this logic.
How to use it in a service
This song is a strong mid-service anchor. It transitions a room from active praise into reflective engagement, and it does so without requiring an announcement or an explanation. The song itself makes the turn.
Before Communion, this song is particularly well placed. The body-and-blood reality the song describes (incarnation, death, resurrection) maps directly onto what the table represents. Singing this before receiving the elements gives the congregation a theological frame for what they are about to do.
During Advent and Lent, it belongs in the rotation consistently, not as a seasonal curiosity but as the theological center that those seasons are orbiting. But outside those seasons, the song holds its own on any Sunday where the teaching is engaging the gospel directly. It does the work of preparation without being heavy-handed about it.
If you are building a two-song bridge into a sermon on grace, substitution, or the cross, this song pairs well with "Before the Throne of God Above" or "His Mercy Is More." The theological resonance between those songs is strong.
Things to watch for as the worship leader
Watch for the temptation to energize the verses. The natural impulse when leading a song at this tempo is to add animation (more movement, more gesture, more urgency). Resist that. The verses carry the theological weight, and your job during them is to invite attention, not generate excitement. Lead from stillness during the verse, and let the chorus be where the room opens up.
Be aware of the bridge if your arrangement includes one. Some arrangements add a repeated "come behold" section that can become meditative if you let it, but can also become mechanical if you are not present to it. If the room is engaging deeply, stay in it. If the room is running on autopilot, name what you are singing before repeating it.
Watch your transitions into and out of this song. It does not work well when rushed onto or off of. It needs a moment before it begins, and it needs a moment after it ends before you speak or move. The silence after the final chord is part of the song.
A note for the team behind you (techs, vocalists, band)
For the band: the key of E gives the guitar a natural, resonant open feel. Use that. A capo on the 4th fret playing a C shape gives you E without barre chords, and it will sit better acoustically. If you have a pianist, let the piano carry the harmonic foundation and let the guitar add texture, not compete for the center.
For vocalists: this song rewards vocal restraint. A strong melody voice with one or two supporting harmonies is enough. The congregation is the choir, and they need space to hear themselves. If your vocal team is large, thin it out for this song. The temptation to fill the sonic space with vocals is real, but less is more.
For the audio tech: the key of E will bring out some natural warmth in the acoustic guitar frequencies. Keep the piano present but not dominant. Pads should be subtle. This is a song where the room sounding full of voices is the mix goal, and pads that are too present will muddy that. Watch the reverb on the vocal.