Now Sarai, Abram’s wife, had borne him no children. She had a female Egyptian servant whose name was Hagar. And Sarai said to Abram, “Behold now, the Lord has prevented me from bearing children. Go in to my servant; it may be that I shall obtain children by her.” And Abram listened to the voice of Sarai. Genesis 16: 1-2
If we camp out here in this passage, we begin to notice a reoccurring trend. Abram and Sarai’s biggest insecurity was rooted in their desire to conceive a child, and their inability to do so forced them to again, forgo their trust in God. When Sarai declared that, “the lord has” we can speculate that she has done two things, they being that Sarai superimposed her own understanding of God’s covenant with Abram, and as a result, acted outside of that promise for the both of them.
In the previous chapter, God presents Abram – and by extension Sarai – an infallible promise that Abram will have children as numerous as the stars in the sky; yet, Abram and Sarai both forget the covenant God made with them, and again, began to work with their own understanding. As a result, God through an angel, had to intervene and remedy the situation Abram and Sarai brought unto themselves.
Faith is so invaluable, because even when He promised Abram and Sarai children, they in the moment could not see when, where and how His promise would come to be. What makes God so objectively trustworthy and reliable, is that when He makes a promise, it is kept; as we learn a chapter later. However, this is why faith is important, because all of scripture is a testimony of how God’s promise is always fulfilled. It is our faith in His promises that keeps us rooted in Him.