The LORD has chastened me severely, but He has not given me over to death.
Open for me the gates of righteousness; I will enter and give thanks to the LORD.
This is the gate of the LORD through which the righteous may enter.
I will give You thanks, for You answered me; You have become my salvation.
The stone the builders rejected has become the capstone;
the LORD has done this, and it is marvelous in our eyes.
This is the day the LORD has made; let us rejoice and be glad in it.
O LORD, save us; O LORD, grant us success. (Psalm 118:18-25)
These verses by David are not about building some kind of big church, or predicting Jesus' coming. They are describing a deeply personal relationship between David and God. The metaphorical stone that is being rejected by builders - that forms the capstone (cornerstone) of religious practice - is ones dependence upon God and ones loving relationship with God.
This is what was being rejected by others. It is David's love and dependence upon God that is the cornerstone of David's life. David is saying that what others have rejected gives him salvation: Depending upon God and having a relationship with God.
David, Jesus and so many other of God's representatives have faced societies where practically everyone rejected their teachings - focused upon love for God and doing God's will. Some, like Jeremiah, John the Baptist, and Jesus, were so rejected by society that their bodies were put to death. In other words, while this teaching of developing our loving relationship with God is the cornerstone, it is typically rejected in lieu of the pomp and circumstance of rituals.
So this is what the Sovereign LORD says:"See, I lay a stone in Zion,a tested stone,a precious cornerstone for a sure foundation;the one who trusts will never be dismayed." (Isaiah 28:15-17)
Blessed is he who comes in the name of the LORD. From the house of the LORD we bless you.
The LORD is God, and He has made His light shine upon us. With boughs in hand, join in the festal procession up to the horns of the altar.
You are my God, and I will give You thanks; You are my God, and I will exalt you.
Give thanks to the LORD, for He is good; His love endures forever. (Psalm 118:26-29)
This phrase has been used in many other verses in the Bible to refer to a teacher who teaches on behalf of God. Consider this statement by Moses as he taught the Israelites what God told him:
If a Levite moves from one of your towns anywhere in Israel where he is living, and comes in all earnestness to the place the LORD will choose, he may minister in the name of the LORD his God like all his fellow Levites who serve there in the presence of the LORD. (Deut. 18:6-7)and
The priests, the sons of Levi, shall step forward, for the LORD your God has chosen them to minister and to pronounce blessings in the name of the LORD and to decide all cases of dispute and assault. (Deut. 21:5)Also consider this discussion about Elijah:
With the stones he built an altar in the name of the LORD, and he dug a trench around it large enough to hold two seahs of seed. (1 Kings 18:32)So we can see that this phrase is not exclusive to Jesus. It is, in fact, referring to something done in the service of God. When it refers to a teacher "coming" in the name of the Lord, as referred to in Deut. 18:6-7 above, we can know that this refers to a teacher approaching a new group or town to teach in God's service, and praise God - as David is doing.
In other words, to "come in the Name of the Lord" means to praise God and preach the glory of God's Holy Names. Glorifying God's Name - repeating it in prayer, in song and in our daily lives - is the method by which we can remember and connect with God.
This is why David also said:
I will praise God's Name in song and glorify Him with thanksgiving. (Psalm 69:30)God's Holy Names - which include Eloi (which Jesus often used - often translated to "Father"), Jehovah, Yahweh, Yah - allow one to make contact with the Supreme Being. As evidenced throughout the Bible, this is our facility to reconnect with God.
" 'Love the Lord your God with all your heart and with all your soul and with all your mind.' This is the first and greatest commandment." (Matt. 22:37-38)
(For a translation of Jesus' statements from the Book of Matthew without institutional sectarian influence, see the Gospels of Jesus - translated from the original Greek texts.)