At the moment we put our faith in Jesus Christ as our Savior we are "joined to the Lord." From that point forward we are inseparable from Him. We share an essential life-force with Him. His divine nature comes to abide in us. Our life comes from Him. Our strength comes from Him. Things may happen that may disrupt that connection, but nothing can ever destroy it.
There are deep theological ramifications of this that have not been fully explored. But my intention here is not to begin that journey. My intention is to encourage you.
Dear friend, there is nothing can separate you from Christ. NOTHING! He would never abandon you, for to abandon any Christian He would have to abandon Himself! How He treats you is how He is treating Himself. What He does may seem harmful to you at the time, but it cannot be. He cannot do harm to Himself.
"But what about the cross? Did He not allow Himself to be harmed?"
Yes, but that was for us. How He treats us is how He treats Himself, and whatever He does for Himself is always for His glory. It was for the eternal joy that would be it's consequence that He embraced the cross (Hebrews 12:2). And it was that cross that joined us to Him.