[He has also appropriated and acknowledged us as His by] putting His seal upon us and giving us His [Holy] Spirit in our hearts as the security deposit and guarantee [of the fulfillment of His promise].
2 Corinthians 1:22 (AMP)
The Holy Spirit is God’s security deposit! This means it is actually the Holy Spirit’s job to guarantee that God’s purposes for our lives will come to pass. And so what is required of us is that we learn to live lives of complete dependence on Him where we no longer rely on our own efforts and performance, but we trust the unfailing working of the Spirit of grace in us.
Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God;
Philippians 4:6 (NKJV)
It takes a daily training of the mind to rid ourselves from the unproductive habit of worry, and instead take our needs and requests to God in simple and childlike faith. And so whatever need may arise, let us receive by faith the supply, the deliverance or the healing that God by His grace has already made available.