The builder and the building
Theme: Christ is building his church; live in dependence on him
The Hebrew word translated as vain in Psalm 127 is different from the vanity of Ecclesiastes. It appears to have a negative connotation since it is elsewhere also translated as misuse (Exodus 20:7) and lies (Isaiah 59:4).
“Three times a year all your males shall appear before the LORD your God at the place that he will choose: at the Feast of Unleavened Bread, at the Feast of Weeks, and at the Feast of Booths. They shall not appear before the LORD empty-handed. – Deuteronomy 16:16
“And if you faithfully obey the voice of the LORD your God, being careful to do all his commandments that I command you today, the LORD your God will set you high above all the nations of the earth. And all these blessings shall come upon you and overtake you, if you obey the voice of the LORD your God. Blessed shall you be in the city, and blessed shall you be in the field. Blessed shall be the fruit of your womb and the fruit of your ground and the fruit of your cattle, the increase of your herds and the young of your flock. – Deuteronomy 28:1-4
Now, therefore, thus you shall say to my servant David, ‘Thus says the LORD of hosts, I took you from the pasture, from following the sheep, that you should be prince over my people Israel…the LORD declares to you that the LORD will make you a house. When your days are fulfilled and you lie down with your fathers, I will raise up your offspring after you, who shall come from your body, and I will establish his kingdom. He shall build a house for my name, and I will establish the throne of his kingdom for ever. – 2 Samuel 7:8, 11b-13
Then David comforted his wife, Bathsheba, and went in to her and lay with her, and she bore a son, and he called his name Solomon. And the LORD loved him and sent a message by Nathan the prophet. So he called his name Jedidiah (beloved of the LORD), because of the LORD. – 2 Samuel 12:24-25
Behold, what I have seen to be good and fitting is to eat and drink and find enjoyment in all the toil with which one toils under the sun the few days of his life that God has given him, for this is his lot. Everyone also to whom God has given wealth and possessions and power to enjoy them, and to accept his lot and rejoice in his toil—this is the gift of God. – Ecclesiastes 5:18-19