The Pulpit Commentary - Psalms 28:7
The Lord is my Strength and my Shield (see Psalms 18:1 , Psalms 18:2 ; Psalms 119:114 ). My heart trusted in him, and I am helped . As far as feeling goes, David is already "helped." He feels himself delivered out of his peril. Therefore, he says, my heart greatly rejoiceth; and with my song—literally, out of my song , which is explained to mean "out of my store of song"—will I praise him. He is ready to offer thanksgiving for a mercy not yet received. read more
The Pulpit Commentary - Psalms 28:6-9
As, midway in Psalms 27:1-14 ; the tone changed from jubilation to humble entreaty, so, midway in the present psalm, there is a change from plaintive and humble entreaty to rejoicing and thanksgiving. The cause of the change would seem to have been a confident assurance, arising out of the very act of prayer, that the prayer is heard and granted, so that the happy results prayed for are certain to follow. Such an assurance is certainly not attained by all those whose supplications are... read more