Since we are receiving our rights to an unshakeable kingdom we should be extremely thankful and offer God the purest worship that delights his heart as we lay down our lives in absolute surrender, filled with awe – Hebrews 12:28 TPT.
When we received Christ, we received an unshakeable Kingdom, the word of GOD tells us that the kingdom of GOD is within us (Luke 17:21), so we will not be afraid, even if the earth is shaken and mountains fall into the ocean depths; even if the seas roar and rage, and the hills are shaken by the violence (Psalms 46:2-3).
I believe shaking is to prepare the body of Christ so that He might present her to Himself a glorious church, not having spot or wrinkle or any such thing, but that she should be holy and without blemish (Ephesians 5:27). This shaking deals with the flesh because flesh and blood cannot inherit the kingdom of GOD (1 Corinthians 15:50 AMPC), so the more we are hard pressed, the more the life of Jesus is manifested in us (2 Corinthians 4:7-11).
It is those who endure to the end that will be saved (Matthew 24:13), we must believe that GOD knows what He is doing and draw to Him closer than before. What can be shaken will be shaken but the true children of GOD will be left standing because they carry that which is unshakable on the inside of them, the unshakeable kingdom of GOD.
So the more we are hard pressed, the more the life of Jesus is manifested in us