Matthew 18:20 (BSB)

For where two or three gather together in My name, there am I with them.”

From Matthew 18. Also in the ESV.

Commentary on Matthew 18:20

• John Calvin (Reformed), Calvin's Commentaries on Matthew 18:20: 20. For where two or three are assembled in my name. This promise is more extensive than the former; for the Lord declares that he will be present, wherever two or three are met together in his name, to guide them by his counsel, (Psalm 73:24,) and to conduct to a prosperous result whatever they shall undertake.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Matthew 18:1-35: As there never was a greater pattern of humility, so there never was a greater preacher of it, than Christ; he took all occasions to command it, to commend it, to his disciples and followers. I. The occasion of this discourse concerning humility was an unbecoming contest among the disciples for precedency; they came to him, saying, among themselves (for they were ashamed to ask...
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Matthew 18:20: Therefore is the kingdom of heaven,.... The Gospel church state, or the church of Christ under the Gospel dispensation, and the methods of God's dealings in it; likened unto a certain king: or "a man", "a king", pointing either to Christ, the king Messiah, who is King of kings, and Lord of lords, the King of saints and churches; who, as God, has a natural...
• Albert Barnes (Presbyterian), Barnes' New Testament Notes on Matthew 18:20: Verse 20. For where two or three, etc. This is a general assertion, made to support the particular promise made to his apostles. He affirms that wherever two or three are assembled together in his name he is in the midst of them. In my name. That is, (1.) by my authority, acting for me in my church.