Satan had great power in heaven as an angel (Ezekiel 28:12–15), but as a result of pride, his position was beneath him. He went up against God and quickly realized that he was no match for our Creator. And though great, his powers are limited. Long story short, he was cast out of the Kingdom of Heaven, which led to the spiritual war of good versus evil. Since being expelled from Heaven, the world has become the domain of the evil one, and for this reason, this beautiful place created by God also represents sin.
God made His first human creation, Adam and Eve. Satan saw how beautiful and perfectly made they were, and of course, he made an attempt to sabotage their existence (Genesis 3). Unfortunately, Adam and Eve were manipulated by the devil and disobeyed God, which caused a grave spiritual shift, producing a sinful nature within us. We can take from this that, when we're disobeying God, we're giving the devil control over our lives.
The war between good and evil.
With this change in place and the evil one at work to keep us on the wide path (Matthew 7:13-14), many turn away from God to the world, for peace, love, happiness and good feelings. But to their disappointment, the world being a sinful place, outside of God, can only deliver those feelings temporarily.
Fortunately, we have a God who sees our suffering, loves us immensely and is understanding beyond measure. He saw we were on a path to eternal death because of deception and instead of making us perish for our sinfulness, had mercy on us, with an offer for eternal life by sending his son, Jesus, to save us. John 3:16 says, "For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life."
Now, let's get a better understanding of who our Heavenly Father is. He created the universe, and He is our creator. He is all-powerful, omnipresent, and perfect in every way. He loves us unconditionally and does all things for our good, even when it doesn’t seem like it, at the moment. John 15:5 says, "I am the vine; you are the branches. If you remain in Me and I in you, you will bear much fruit; apart from me, you can do nothing." This tells us that God is the only one that can quench our thirst and provide us with true peace and joy. With the understanding that we are from Him, it makes perfect sense that we need Him to sustain us. In John 4:14, Jesus said to the Samaritan woman, "But whoever drink of the water that I shall give him, shall never thirst; but the water that I shall give him shall be in him a well of water springing up into everlasting life."
Last, we must remember that Satan can make things appear beautiful and safe, 2 Corinthians 11:14 states that, he can transform himself into an angel of light. In John 10:10, Jesus said, Satan is here to steal, kill, and destroy. We must be watchful not to fall into his trap and lies (Matthew 26:41). The devil's power is limited, and his time is short, but this also means that he is desperate to get as many souls as possible, so we must be vigilant and consistently pray. When we believe in the God of Abraham, be obedient to Him, and have faith, surrendering ourselves to Him, we are giving Him control over our lives. In that control is His protection, His peace, His joy, a relationship with Him, and His presence in our lives, paving the way to everlasting life.
Many many blessings to you!