Belief in the Person and Work of the Lord Jesus Christ is all that is required.

For God so loved the world, that He gave His only begotten Son,
that whoever believes in Him should not perish, but have eternal life.
John 3:16
"He who believes in the Son has eternal life; but he who does not obey the Son
shall not see life, but the wrath of God abides on Him."
John 3:36
"Truly, truly, I say to you, he who hears My word and believes Him who sent Me,
has eternal life, and does not come into judgment,
but has passed out of death into life."
John 5:24
He who has the Son has the life;
he who does not have the Son of God does not have the life.
1 John 5:12

The Scripture text of the New American Standard Bible is used by permission of
The Lockman Foundation, a corporation not for profit, LaHabra, California,
© 1960, 1962, 1963, 1968, 1971, 1972, 1973, 1975, 1977, 1988. All rights reserved.