Rejoice in the Lord alway: and again I say, Rejoice.
If you obey this command you will never suffer depression or be “down in the dumps”. See how good God is. He wants us to be happy and rejoice: and our rejoicing should be IN HIM. Rejoice in the LORD. Rejoice that your sins were paid for by Jesus. Rejoice that your name is written in God’s book of Life. Rejoice that Jesus is building you a mansion in heaven. If you are not yet saved, rejoice that there is still time. Rejoice that the celestial city is in view, and the gates are open wide, and there is a big welcome sign. Rejoice in the Lord always: and again I say, Rejoice.
Commentary by Francis L. Harris
"...what must I do to be saved?" Acts 16:30