Don't be selfish: this is what Our Lady tells you in Medjugorje

Message dated July 25, 2000
Dear children, do not forget that here on earth you are on the way to eternity and that your home is in Heaven. Therefore, little children, be open to the love of God and leave selfishness and sin. That your joy is only to discover God in daily prayer. So use this time and pray, pray, pray, and God is close to you in prayer and through prayer. Thanks for answering my call.
Some passages from the Bible that can help us understand this message.
Gn 3,1-13
The snake was the most cunning of all the wild beasts made by the Lord God. He said to the woman: "Is it true that God said: You must not eat of any tree in the garden?". The woman replied to the snake: "Of the fruits of the trees in the garden we can eat, but of the fruit of the tree that stands in the middle of the garden God said: You must not eat and touch it, otherwise you will die." But the snake said to the woman: “You will not die at all! Indeed, God knows that when you eat them, your eyes would open and you would become like God, knowing the good and the bad ". Then the woman saw that the tree was good to eat, pleasing to the eye and desirable to acquire wisdom; she took some fruit and ate it, then also gave it to her husband, who was with her, and he also ate it. Then both of them opened their eyes and realized they were naked; they braided fig leaves and made themselves belts. Then they heard the Lord God walking in the garden in the breeze of the day and the man and his wife hid from the Lord God in the middle of the trees in the garden. But the Lord God called the man and said to him, "Where are you?". He replied: "I heard your step in the garden: I was afraid, because I am naked, and I hid myself." He went on: “Who let you know you were naked? Have you eaten from the tree of which I commanded you not to eat? ". The man replied: "The woman you placed beside me gave me a tree and I ate it." The Lord God said to the woman, "What have you done?". The woman replied: "The snake has deceived me and I have eaten."
Ex 3,13-14
Moses said to God: “Behold I come to the Israelites and say to them: The God of your fathers sent me to you. But they will say to me: What is it called? And what will I answer them? ". God said to Moses: "I am who I am!". Then he said, "You will say to the Israelites: I-Am sent me to you."
Mt 22,23-33
On that same day Sadducees came to him, who affirm that there is no resurrection, and questioned him: "Master, Moses said: If someone dies without children, the brother will marry his widow and thus raise a descent to his brother. Now, there were seven brothers among us; the first just married died and, having no descendants, left his wife to his brother. So also the second, and the third, up to the seventh. Eventually, after all, the woman also died. At the resurrection, which of the seven will she be wife to? Because everyone has had it. " And Jesus answered them: “You are deceived, knowing neither the Scriptures nor the power of God. In fact, at the resurrection you do not take a wife or husband, but you are like angels in heaven. As for the resurrection of the dead, have you not read what you have been told by God: I am the God of Abraham and the God of Isaac and the God of Jacob? Now, he is not God of the dead, but of the living ”. Hearing this, the crowd was amazed at his doctrine.