It is not a LIE. It stands up to reason. And here is how.

Perfection is required for the universe to exist. Think about it. All the laws of the universe need to act perfectly. If even one of them fails in the least bit of perfection, the universe comes crashing down in a blinding cascade of destruction.

Perfection is required in at least 2 ways:
1. You can't make something work as well as the universe works together without perfection;
2. God can't stand imperfection so much, that He can't even stand the shadow of imperfection.

When Adam and Eve sinned (and all the rest of us later), the universe should have dissolved for the two above reasons. But God has His reasons for not destroying it. Rather, He brought it back to perfection. You can't do such. I can't do such. Only God can.

God did it by sending His Son, Jesus, in the form of a man - it was man who sinned, so it was man who had to pay. Being God as well as man, Jesus could take the punishment for imperfection that us weaker people couldn't take. It was the perfection of Jesus, and the strength of God that Jesus is, that upheld the universe at the same time it was turning away the imperfection from the eyes of God.

God had desired to give mankind the graces of the universe before the time of the fall into sin. Jesus took the punishment and upheld the universe, all the whole time so that He could give it all back to mankind as God had intended in the first place. That's a part of the perfection.

But neither the Father nor Jesus are going to downplay the role of Jesus in the whole thing. They are perfectly honest. And that is why you need Jesus. Because you can't do it even for yourself. You are imperfect. And you need to admit to Jesus perfection to be honest and truthful.

If you don't pick up and use the honest truth of Jesus doing it for you, you are dead and gone. Don't lock yourself into death by dying without Jesus.