I've studied the Bible and different religions most of my life. The criteria I use is the Bible. If a religion teaches something that can't be supported by the Bible, then it's not the true religion. The only one I've found that relies on the Bible is Jehovah's Witnesses. I love the way they continue to study the Bible no matter how long they have been Witnesses.
I couldn't imagine following a religion that is not true, my life is involved. Here are some of the main beliefs of JWs along with the scriptures that prove them true.
WHAT JEHOVAH'S WITNESSES BELIEVE
Belief Scriptural Reason
Bible is God's Word and is truth 2 Tim. 3:16, 17; 2 Pet. 1:20, 21; John 17:17
Bible is more reliable than tradition Matt. 15:3; Col. 2:8
God's name is Jehovah Ps. 83:18; Isa. 26:4; 42:8, AS; Ex. 6:3
Christ is God's Son and is inferior to Him Matt. 3:17; John 8:42; 14:28; 20:17; 1 Cor. 11:3; 15:28
Christ was first of God's creations Col. 1:15; Rev. 3:14
Christ died on a stake, not a cross Gal. 3:13; Acts 5:30
Christ's human life was paid as a ransom for obedient humans Matt. 20:28; 1 Tim. 2:5, 6; 1 Pet. 2:24
Christ's one sacrifice was sufficient Rom. 6:10; Heb. 9:25-28
Christ was raised from the dead as an immortal spirit person 1 Pet. 3:18; Rom. 6:9; Rev. 1:17, 18
Christ's presence is in spirit John 14:19; Matt. 24:3; 2 Cor. 5:16; Ps. 110:1, 2
We are now in the 'time of the end' Matt. 24:3-14; 2 Tim. 3:1-5; Luke 17:26-30
Kingdom under Christ will rule earth in righteousness and peace Isa. 9:6, 7; 11:1-5; Dan. 7:13, 14; Matt. 6:10
Kingdom brins ideal living conditions to earth Ps. 72:1-4; Rev. 7:9, 10, 13-17; 21:3, 4
Earth will never be destroyed or depopulated Eccl. 1:4; Isa. 45:18; Ps. 78:69
God will eliminate present system of things in the battle at Har-Magedon Rev. 16:14, 16; Zeph. 3:8; Dan. 2:44; Isa. 34:2; 55:10, 11
Wicked will be eternally destroyed Matt. 25:41-46; 2 Thess. 1:6-9
People God approves will receive everlasting life John 3:16; 10:27, 28; 17:3; Mark 10:29, 30
There is only one road to life Matt. 7:13, 14; Eph. 4:4, 5
Human death is due to Adam's sin Rom. 5:12; 6:23
The human soul ceases to exist at death Ezek. 18:4; Eccl. 9:10; Ps. 6:5; 146:4; John 11:11-14
Hell is mankind's common grave Job 14:13, Dy; Rev. 20:13, 14, AV (margin)
Hope for dead is resurrection 1 Cor. 15:20-22; John 5:28, 29; 11:25, 26
Adamic death will cease 1 Cor. 15:26, 54; Rev. 21:4; Isa. 25:8
Only a little flock of 144,000 go to heaven and rule with Christ Luke 12:32; Rev. 14:1, 3; 1 Cor. 15:40-53; Rev. 5:9, 10
The 144,000 are born again as spiritual sons of God 1 Pet. 1:23; John 3:3; Rev. 7:3, 4
New covenant is made with spiritual Israel Jer. 31:31; Heb. 8:10-13
Christ's congregation is built upon himself Eph. 2:20; Isa. 28:16; Matt. 21:42
Prayers are to be directed only to Jehovah through Christ John 14:6, 13, 14; 1 Tim. 2:5
Images should not be used in worship Ex. 20:4, 5; Lev. 26:1; 1 Cor. 10:14; Ps. 115:4-8
Spiritism must be shunned Deut. 18:10-12; Gal. 5:19-21; Lev. 19:31
Satan is invisible ruler of world 1 John 5:19; 2 Cor. 4:4; John 12:31
A Christian ought to have no part in interfaith movements 2 Cor. 6:14-17; 11:13-15; Gal. 5:9; Deut. 7:1-5
A Christian should keep separate from world Jas. 4:4; 1 John 2:15; John 15:19; 17:16
Obey human laws that do not conflict with God's laws Matt. 22:20, 21; 1 Pet. 2:12; 4:15
Taking blood into body through mouth or veins violates God's laws Gen. 9:3, 4; Lev. 17:14; Acts 15:28, 29
Bible's laws on morals must be obeyed 1 Cor. 6:9, 10; Heb. 13:4; 1 Tim. 3:2; Prov. 5:1-23
Sabbath observance was given only to Israel and ended with Mosaic Law Deut. 5:15; Ex. 31:13; Rom. 10:4; Gal. 4:9, 10; Col. 2:16, 17
A clergy class and special titles are improper Matt. 23:8-12; 20:25-27; Job 32:21, 22
Man did not evolve but was created Isa. 45:12; Gen. 1:27; Matt. 19:4
Christ set example that must be followed in serving God 1 Pet. 2:21; Heb. 10:7; John 4:34; 6:38
Baptism by complete immersion symbolizes dedication Mark 1:9, 10; John 3:23; Acts 19:4, 5
Christians gladly give public testimony to Scriptural truth Rom. 10:10; Heb. 13:15; Isa. 43:10-12
Hope this helps in your search for truth.