" I will put my dwelling place among you and I will not reject (despise) you. I will walk among you and be your God and you will be my people" Leviticus 26:11-12
This is the promise God made to swell among His people. It is a promise to be present and not abandon them. He had them create a physical space for Him that they took from camp to camp until David was eventually able to make a temple for God. Today the church building is a representation of God's home, but in reality the Holy Spirit lives in everyone that belongs to God. He made this promised from the beginning to the end of the Bible to encourage you to follow Him faithfully.
If you choose to believe in Jesus, declare God your savior, and walk in faith following Jesus for the rest of your life, then you are a true Christian. That means you have the Holy Spirit living within your soul as the seal that you belong to God. He is your intercessor to God explaining your heart to God and giving you wisdom from God. He prays on your behalf when you don't have words. He is your insurance of your eternal inheritance.
This is the first promise that God will have a real relationship with His people where they can feel safe. It was made once the Israelites had been freed from Egypt for a little while. They had time to get used to their new reality, but they were still like children wondering about needing direction and instruction. He was giving them security to stand tall with dignity to follow Him.
The biggest part of this promise is that God promised never to abandon or reject them. Once you are a part of God's family you will never be rejected. However, you can't just call yourself a Christian and be done with it. It is choosing to follow Jesus anywhere He directs you. You may not understand your instructions. The instructions could actually scare you, but you have to trust Jesus enough to listen to the Holy Spirit. To tune out the Holy Spirit is to reject instruction. Faith is the key, but obedience is the action that makes faith real.
The strength behind this promise is having a close relationship with God. They did not physically see God, but they knew He was there. He had shown up enough where they did not doubt that He was with them. Salvation provides you with a healthy family bond that comes with boundaries, endless love, protection, education, wisdom, and more. Being a part of God's family gives you a since of belonging. Being chosen by God should make you feel many things, but especially thankful and special. It is a powerful promise to hold onto.
Exodus 6:7, 25:8, 29:45, Leviticus 26:11-12, Joshua 22:19, Psalm 76:2, Jeremiah 7:23, 11:4, 30:22, Ezekiel 11:19-20, 36:28, 2 Corinthians 6:16, & Revelations 21:3