Psalm 19

This psalm gives the means by which God will bear testimony of Himself in the tribulation period. Since Christians will be taken out of the world at the rapture (see 1 Thess. 4:15-18), and the testimony of the gospel of the grace of God will be preached no longer, God will still have a testimony of Himself to man, namely, through His creation (vss. 1-6) and through His Word (vss. 7-11). God will work through these two testimonies particularly among the Jews who will return to their land early in the tribulation. A remnant among them will be awakened and seek to live uprightly in accord with the knowledge they have of God.
The final portion of the psalm shows the effect these testimonies will have upon their soul. There is a searching of heart and a seeking to be kept from the current of apostasy in the land referred to as "the great transgression" (vss. 12-14).