12:3 joy . . . salvation. The salvation of the Lord always brings joy (35:10; 51:3, 11; 61:3), as God removes the causes for sorrow and anxiety.

water . . . wells. Salvation is compared to an abundance of water (Ps. 1:3; 65:9; 104:10–13; 107:35) coming “from the wells of salvation” (41:18; cf. John 4:14).