Albert Barnes Commentary Psalms 22:26

"The meek shall eat and be satisfied; They shall praise Jehovah that seek after him: Let your heart live for ever." — Psalms 22:26 (ASV)

The meek shall eat and be satisfied - The word “meek” - ענוים ‛ ănâviym - means here rather “afflicted, distressed, miserable.” This is its usual meaning. It is employed sometimes in the sense of mild or meek ; but it here manifestly denotes the afflicted, the poor, the distressed. When it is said that they would eat and be satisfied, the idea is that of prosperity or abundance; and the statement is, that, as the result of the Redeemer’s work, blessings in abundance would be imparted to the poor and the distressed—those who had been destitute, forsaken, and friendless.

They shall praise the Lord that seek him - Those who worship God, or the pious, will see abundant cause to praise God. They will not merely call upon him by earnest prayer, but they will render him thanks for his mercies.

Your heart shall live for ever - The hearts of those who worship God. Their hearts would not faint or be discouraged. They would exult and rejoice continually. In other words, their joy and their praise would never die away.