We read about God’s trustworthiness - "The LORD is a refuge for the oppressed, a stronghold in times of trouble. Those who know your name will trust in you, for you, LORD, have never forsaken those who seek you" (vs. 9-10).
We praise God. We make it known that He is to be praised - "Sing praises to the LORD, enthroned in Zion; proclaim among the nations what He has done" (v. 11).
In our worship, we speak of God’s judgment as well as His salvation - "For He who avenges blood remembers; He does not ignore the cry of the afflicted" (v. 12).
In our worship, we look to the Lord for mercy and, with joy, we praise Him for His salvation - "O LORD, see how my enemies persecute me! Have mercy and lift me up from the gates of death, that I may declare your praises in the gates of the Daughter of Zion and there rejoice in your salvation" (vs. 13-14).
As well as emphasizing that God is trustworthy, we must also emphasize that He is not to be taken for granted by proud unbelief - "The nations have fallen into the pit they have dug; their feet are caught in the net they have hidden. The LORD is known by his justice; the wicked are ensnared by the work of their hand" (vs. 15-16).