Those who get tempted to go and fight with ISIS in the name of Islam are being taken as fools and lied to in the name of Satan.
They will entice you with promises of going to paradise in the name of Allah. They will entice you with promises of virgins, but anyone who is truly religious will know this is not true. Even in the Bible there is a warning about being tempted by the devil and the USA is using these very same tactics to recruit terrorists.
1 John 2:4 He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him.
Meaning that a person who says they are doing in the name of God and then breaks the 10 Commandments which includes that shalt not kill, is a liar.
Revelation 21:7 “He who overcomes shall inherit all things, and I will be his God and he shall be My son. 8 “But the cowardly, unbelieving, abominable, murderers, sexually immoral, sorcerers, idolaters, and all liars shall have their part in the lake which burns with fire and brimstone, which is the second death.”