Christ not only commands believers to get baptized, baptism is also a gift he graciously gives for our benefit and blessing.
And Jesus came and said to them, “All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age.”
A second reason why you should get baptized is to publicly profess your faith in Jesus. We’ve seen that this element of baptism is implicit in Matthew 28:19. It’s more explicit in a few other places in Scripture.
We’ve seen that in baptism you commit to Christ. Now we will see that in baptism you commit to Christ’s people. As we’ve already seen, on the day of Pentecost, those who received the word were baptized and added to the church (Acts 2:41).