“By this gospel you are saved, IF you hold firmly to the word I preached to you. Otherwise, you have believed in vain.” Paul
Paul said it not me. You have to hold FIRMLY to the word otherwise you have believed in vain. You have to hold on firmly because the world and the evil one are constantly trying to tear your faith away from you. You may have walked through the gate, but the path is narrow. HOLD ON! Suffering will come. HOLD ON!
God Spots 
If you are in the midst of struggle, pray this promise and hang on. “We are hard pressed on every side, but not crushed; perplexed, but not in despair; persecuted, but not abandoned; struck down, but not destroyed.” Acknowledge the power of God in your life and HOLD ON!