What does Psalm 30:12 mean?

Restoration to fellowship with the Lord enabled David to do more than rejoice. He could also sing praise to God without reservation and without end.

Every restoration to fellowship with the Lord is an occasion to sing praise to the Lord and to thank Him. Perhaps David was looking forward to eternity when he wrote, "forever." For the believer, praise to the Lord doesn't end when his physical life ends; it continues in heaven on a grander, purer scale. Revelation 5:9–10 pictures God's people in heaven singing this song of praise: "Worthy are you to take the scroll and to open its seals, for you were slain, and by your blood you ransomed people for God from every tribe and language and people and nation, and you have made them a kingdom and priests to our God, and they shall reign on the earth."