For I am not ashamed of the gospel, because it is the power of God that brings salvation to everyone who believes: first to the Jew, then to the Gentile.
Romans 1:16
They replied, Believe in the Lord Jesus, and you will be savedyou and your household.
Acts 16:31
John 3:16
For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.
Yes Jesus is the only way to salvation. There's no another way but Hesus alone. He truly loves the world by putting his self on the cross died and rose again for us.
Salvation is redemption(being rescued) by God from the effects of sin. We know that everyone who sins must pay the ultimate penalty that is death both physical and spiritual.
Romans 6:23 For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.
Romans 8:2 Because through Christ Jesus the law of the spirit of life set me free from the law of sin and death.