What stood out to me in today's reading, in both the Old and New Testament, was God's promises.
In the New Testament reading, God promise to take care of us. We don't have to worry about anything, because "if God cares so wonderfully for wildflowers that are here today and thrown into the fire tomorrow, He will certainly care for you." (v. 30)
In the Old Testament reading, we see that God follows through with what He promises. Genesis 21:1-2 tells of Isaac being born to Abraham and Sarah. In 21:18, God promises that He will make a great nation from Ishmael, and in vs 20, Ishmael is already "a skillful archer". In chapter 22, God told Abraham to sacrifice his only son, even though He had promised to make a great nation out of Abraham. Abraham trusted God and did what He asked him to do. God saved Isaac after seeing that Abraham feared God, another step to when He fulfills His promise later through giving Isaac descendants.
The Lord keeps His promises. We only need to trust in Him.
"Yahweh-Yireh (which means "the Lord will provide.")....On the mountain of the Lord it will be provided." - Genesis 22:14