Galatians 3:27

As many of you as have been baptized into Christ - All of you who have believed in Christ as the promised Messiah, and received baptism as a public proof that ye had received Christ as your Lord and Savior, have put on Christ - have received his Spirit, and entered into his interests, and copied his manners. To put on, or to be clothed with one, is to assume the person and character of that one; and they who do so are bound to act his part, and to sustain the character which they have assumed. The profession of Christianity is an assumption of the character of Christ; he has left us an example that we should follow his steps, and we should, as Christians, have that mind in us which was in him. See the notes on Romans 6:3, Romans 6:4; and especially those on Romans 13:14 (note), where this phrase is farther explained.

For as many of you - Whether by nature Jews or Gentiles.

As have been baptized into Christ - Or "unto" (εἰς eis) - the same preposition which in Galatians 3:24 is rendered unto) Christ. That is, they were baptized with reference to him, or receiving him as the Saviour; see this explained in the note at Romans 6:3.

Have put on Christ - That is, they have put on his sentiments, opinions, characteristic traits, etc., as a man clothes himself. This language was common among the ancient writers; see it explained in the note at Romans 13:14.

3:27 For as many of you as have testified your faith by being baptized in the name of Christ, have put on Christ - Have received him as your righteousness, and are thereforesons of God through him.