Consider therefore the kindness and sternness of God: sternness to those who fell, but kindness to you, provided that you continue in his kindness. Otherwise, you also will be cut off. And if they do not persist in unbelief, they will be grafted in, for God is able to graft them in again. Romans 11:22-23 NIV
We must consider the traits of God. God does show sternness to those who disobey. God is just and deals justly with all mankind. To those who obey and follow in the steps of the Son, kindness is shown. This is of His doing. We do not deserve kindness, as we were all born into sin, and apart from the Son are doomed to an eternal destruction. We must continue to follow the Lord, believing in faith that we shall receive that which has been promised to us. It is possible for one to fall away from Christ after having been saved. Salvation does come with a price, as Christ paid the ultimate price to achieve salvation for us. Live your life in obedience to Christ. When you fall, get up, going to Him with a repentant heart. The Lord will never turn away the one with a repentant heart.