Psalms 28:7

Has God heard our supplications? Let us then bless his name. The Lord is my strength, to support me, and carry me on through all my services and sufferings. The heart that truly believes, shall in due time greatly rejoice: we are to expect joy and peace in believing. God shall have the praise of it: thus must we express our gratitude. The saints rejoice in others' comfort as well as their own: we have the less benefit from the light of the sun, nor from the light of God's countenance, for others' sharing therein. The psalmist concludes with a short, but comprehensive prayer. God's people are his inheritance, and precious in his eyes. He prays that God would save them; that he would bless them with all good, especially the plenty of his ordinances, which are food to the soul. And direct their actions and overrule their affairs for good. Also, lift them up for ever; not only those of that age, but his people in every age to come; lift them up as high as heaven. There, and there only, will saints be lifted up for ever, never more to sink, or be depressed. Save us, Lord Jesus, from our sins; bless us, thou Son of Abraham, with the blessing of righteousness; feed us, thou good Shepherd of the sheep, and lift us up for ever from the dust, O thou, who art the Resurrection and the Life.

Here is David's declaration and confession of faith, coupled with a testimony from his experience. The Lord is my strength. The Lord employs his power on our behalf, and moreover, infuses strength into us in our weakness. The psalmist, by an act of appropriating faith, takes the omnipotence of Jehovah to be his own. Dependence upon the invisible God gives great independence of spirit, inspiring us with confidence more than human. And my shield. Thus David found both sword and shield in his God. The Lord preserves his people from unnumbered ills; and the Christian warrior, sheltered behind his God, is far more safe than the hero when covered with his shield of brass or triple steel. My heart trusted in him, and I am helped. Heart work is sure work; heart trust is never disappointed. Faith must come before help, but help will never be long behindhand. Every day the believer may say, "I am helped, "for the divine assistance is vouchsafed us every moment, or we should go back unto perdition; when more manifest help is needed, we have but to put faith into exercise, and it will be given us. Therefore my heart greatly rejoiceth; and with my song will I praise him. The heart is mentioned twice to show the truth of his faith and his joy. Observe the adverb "greatly, "we need not be afraid of being too full of rejoicing at the remembrance of grace received. We serve a great God, let us greatly rejoice in him. A song is the soul's fittest method of giving vent to its happiness, it were well if we were more like the singing lark, and less like the croaking raven. When the heart is glowing, the lips should not be silent. When God blesses us, we should bless him with all our heart.