Charles Ellicott Commentary Galatians 3:27

"For as many of you as were baptized into Christ did put on Christ." — Galatians 3:27 (ASV)

For.—This introduces the reason why the Christian stands to God in the relation of an adult son. He is so by virtue of his relation to Christ.

Baptized into Christ.—To be baptized “into Christ” is something more than merely “to be baptized in the name of Christ.” It implies the contracting of a very close and intimate relation, the nature of which is expressed in the phrase that follows.

Have put on Christ.—The metaphor has been thought to be taken from the putting on of the white baptismal robes. It is, however, commonly used in the LXX, where it means “to adopt” or “take to oneself.” The Christian, at his baptism, thus “took to himself” Christ, and sought to grow into full unison and union with Him.