II Thess. 2:15 With all these things in mind, dear brothers and sisters, stand firm and keep a strong grip on everything we taught you both in person and by letter.
Paul had been reminding the church that the Lord is coming back to right the wrong. Judgment is coming on the earth against those who reject God and His Word. It is going to happen and Paul reminds them here to stand firm and hang on tight to the Lord and His ways. There are times in which it means we desperately hang on. Doubts, discouragements, defeats, disillusionments, and despair are all part of life. We must never stop hanging on, no matter what comes our way. Eternity is at stake.
We live in a very unstable and unsteady world. People are lost and are staggering around trying to find some semblance of meaning and purpose to their lives. People are grasping for whatever their depraved minds tells them will bring them a sense of pleasure and enjoyment in their desperate lives. People everywhere are without hope and are seeking whatever reason they can find to keep on living.
Stand firm on the solid foundation of God's Word. Trust in what God says. Live diligently by its precepts. It is the only truth there is in the world. Don't listen to the opinions of man or trust what they say. Listen to God and what He says.
Keep a strong grip on everything you have been taught from God. Don't let go of what you know is from God. He will never lead you astray. He will always tell you what you need to know. His only desire for you is that which is good for your soul. We live in a very perilous time and it is imperative that we cling tightly to the Lord.