God said to Abraham years earlier, “You are going to have a son. It’s going to happen.” Did it happen the next day, or during the next ten years? No, but one day Isaac was born in fulfillment of God’s promise.
Further God said, “Not only are you going to have a son; all the world will be blessed through your son Isaac and his descendants.” That was the promise God had given Abraham. Jesus said about Abraham, “He saw My day, and he rejoiced.” Abraham saw it on Mount Moriah. That’s where God gave him a vision of the Messiah Who one day would take away the sins of the world. Prov. 18:30 “As for God, his way is perfect: the word of the LORD is proven: he is a shield to all those that trust in him.”
“You have trusted Him in a few things, and He has not failed you. Trust Him now for everything, and see if He does not do for you exceeding abundantly above all that you could ever have asked or thought, not according to your power or capacity, but according to His own mighty power, that will work in you all the good pleasure of His most blessed will. You find no difficulty in trusting the Lord with the management of the universe and all the outward creation, and can your case be any more complex or difficult than these, that you need to be anxious or troubled about His management of it?” - Hannah Whitall Smith
"He chose me; therefore I am His responsibility." That is trust!