These two psalms obviously are one. Why they were separated we may never know. These words were written by David after he brought the Ark of the Covenant into Jerusalem and placed it in the tent he had prepared.
The three verses of Psalm 134 are addressed to the night shift at the Tabernacle while Psalm 135 is address to the day crew. It is impossible to know for sure why God put the night shift first; possibly it was because their work received little notice by the community, and God wanted to encourage them in their duties.
We have the same issues today though it is a little different. The pastors of large churches get noticed for their appearances on TV and radio; some evangelists receive notice for their crusades and other work. But pastors of small churches are often unnoticed and the same goes for missionaries who serve twenty, thirty, forty or more years in foreign countries. But Jesus said that in His kingdom the first shall be last and the last shall be first. It doesn’t mean one is better than the other, but those who worked without recognition here will receive it there.
In these psalms, David encouraged the priests and Levites as well as the worshippers to praise God for His goodness to them. He recounted all the things God had done in the past to fulfill His promise to Abraham, Isaac, and Jacob.
David mentioned how God had delivered the Israelites from bondage in Egypt. Hasn’t God also delivered us from the consequences of our sin to give us the hope of eternal life? Shouldn’t we begin each day with praise to God for the redemption we have experienced through Jesus Christ?
God showed His love for us in the beginning. He didn’t wait for Adam and Eve to rush to Him; He went seeking them because He knew what He would do to solve the problem of sin and death. He would send His Son to earth as a human, to go through the experiences of human life, and then to die on a cross to pay for our redemption. God rebuked Satan who had entered and used the serpent, and said, “And I will cause hostility between you and the woman, and between your offspring and her offspring. He will strike your head, and you will strike His heel.” (Genesis 3:15) Christ not only struck the offspring (sin), He crushed the head (Satan) so he no longer has power over us. As Paul wrote in Romans 8:1-2, “So now there is no condemnation for those who belong to Christ Jesus. And because you belong to Him, the power of the life-giving Spirit has freed you from the power of sin that leads to death.” Praise God from Whom all blessings flow!