Charles H. Spurgeon on Psalms 4:5

Provided that the rebels had obeyed the voice of the last verse, they would now be crying, —"What shall we do to be saved?" And in the present verse, they are pointed to the sacrifice, and exhorted to trust in the Lord. When the Jew offered sacrifice righteously, that is, in a spiritual manner, he thereby set forth the Redeemer, the great sin-atoning Lamb; there is, therefore, the full gospel in this exhortation of the Psalmist. O sinners, flee ye to the sacrifice of Calvary, and there put your whole confidence and trust, for he who died for men is the LORD JEHOVAH.