Can you really know you are saved?
Yes, a believer can know they are saved. The Holy Spirit bears witness with our spirit that we are children of God, so we do not walk in constant fear. Scripture makes it plain that we can know we have passed from death unto life.
Les explains that being led by the Spirit of God proves we are the sons or born ones of God (s376-s378). Believers have not received the spirit of bondage again to fear; they need not walk in constant fear, though they revere God, because they know He loves them (s381-s389). Les stresses that salvation is not dependent on how much we love Him, but on realizing how much He loved us—enough to die and suffer for us (s402-s409). The Holy Spirit bears witness with our spirit that we are the children of God (s410-s413). This directly answers those who say you can never really know; the Bible makes it plain that we can know we have passed from death unto life (s414-s424).
We know that we have passed from death unto life, because we love the brethren. He that loveth not his brother abideth in death.