"And so after Abraham had patiently endured, he obtained the promise." ~Hebrews 6:15
We know that according to 2nd Corinthians 1:20, all the promises of God in Him are Yes and in Him Amen, however there are also intervals which can be long between the promise and the performance of that promise.
Satan will try to assault our mind with lies saying God has forgotten about us, or He has changed His Mind about what He promised to do, but the Devil is a LIAR, because Numbers 23:19 tells us that God is not a Man that He should lie. Has He said it, and will not do it? Does He promise, and not fulfill? So that means God is faithful to perform what He has promised!!!
The "INTERVAL PERIOD" can be a trying time for us as believers, but Romans 8:15 tells, if we hope for what we do not have yet, we wait for it patiently. We must remain faithful in waiting, and after we have endured the "INTERVAL PERIOD", like Abraham, we too shall obtain whatever promises God has for our lives.