THE PERFECT TIMING OF GOD!
GOD IS ALWAYS ON TIME AND IS IN NO HURRY in the working out of His plans.
Man may fret and fume, hurry and bustle, but Jehovah has all eternity at His disposal and works leisurely and with deliberation. Well for us to mark this attentively—”he that believeth SHALL NOT MAKE HASTE” (Isa. 28:16). Again, we note here GOD’S ALMIGHTINESS. Nothing can hinder or thwart the outworking of His purpose. Abraham may be old, Sarah may be barren, but such trifles present no difficulty to Him who is infinite in power. Abraham may seek to obtain an heir through Hagar, but Jehovah’s plan cannot be foiled: Sarah’s son SHALL BE his heir, not Ishmael.
Behold, too, the FAITHFULNESS of God. The Lord had SAID Sarah SHALL HAVE a son, and what He promised He performed. His promise may seem unreasonable and impossible to the carnal mind, but His word is SURE. Learn, also, how FAITH IS TRIED AND TESTED. This is in order to display its GENUINENESS. A faith that is incapable of enduring trial is no faith at all. A hard thing was promised to Abraham but, “he considered not his own body now dead, when he was about an hundred years old, neither yet the deadness of Sarah’s womb: he staggered not at the promise of God through unbelief, but was strong in faith, giving glory to God” (Rom. 4:19, 20).
Finally, note that GOD HAS A SET TIME for the accomplishing of His will and the fulfilling of His word. Nothing is left to chance. Nothing is CONTINGENT on the creature. Everything is definitely fixed beforehand by God. “For Sarah conceived, and bare Abraham a son in his old age, AT THE SET TIME of which God had spoken to him” (Gen. 21:2). Mark how this is emphasized by repetition—”But my covenant will I establish with Isaac, which Sarah shall bear unto thee AT THIS SET TIME in the next year” (Gen. 17:21); “AT THE TIME APPOINTED I will return unto thee, according to the time of life, and Sarah shall have a son” (Gen. 18:14).
So also we read in another connection, “For the vision is yet for AN APPOINTED TIME, but at the end it shall speak” (Hab. 2:3).
[Quoted from A.W. Pink’s ‘Gleanings in Genesis’]