In Genesis 21:6-7 Sarah’s doubt at ever becoming a mother has turned to joy as God has placed what the psalmist calls in 40:3 “a new song in my mouth; Praise to our God; Many will see it and fear, And will trust in the LORD.” Sarah experienced something that she had lost hope of ever enjoying “motherhood”. And in a way to show her that God is a God of grace as He has done this marvelous work in spite of her failure to trust Him. Can you imagine the ladies at the well as Sarah came strolling up carrying Isaac?
It is not our list of do’s and don’ts or our great victories in Christ that causes the world to want to know the God that we worship. It’s when they see messed up people who still fall on their faces and God loves them anyway. It is not our love for God that blows the mind of unbelievers rather it is His love for us! Sarah is blown away as Isaac suckles at her breasts, “Who would have said to Abraham that Sarah would nurse children? For I have borne him a son in his old age.” We know for certain who wouldn’t have said it, SARAH! Yet now because of God’s faithfulness all proclaim His glory!