, Isaiah 29:13, NIV. "The Lord says: 'These people come near to Me with their mouth and honor Me with their lips, but their hearts are far from Me. Their worship of Me is made up only of rules taught by men.'"
True religion is focused on Jesus, not doctrine or philosophy. It's in the Bible, Colossians 2:8, NKJV. "Beware lest anyone cheat you through philosophy and empty deceit, according to the tradition of men, according to the basic principles of the world, and not according to Christ.
True religion bears spiritual fruit. It's in the Bible, Matthew 7:16-18, NKJV. "You will know them by their fruits. Do men gather grapes from thornbushes or figs from thistles? Even so, every good tree bears good fruit, but a bad tree bears bad fruit. A good tree cannot bear bad fruit, nor can a bad tree bear good fruit."
True religion is doing for others and staying true to the Lord. It's in the Bible, James 1:27, NKJV. "Pure and undefiled religion before God and the Father is this: to visit orphans and widows in their trouble, and to keep oneself unspotted from the world.
True religion does not consist only of meditation, fasting, and prayer. It's in the Bible, Isaiah 58:6-7, NKJV. “Is this not the fast that I have chosen: To loose the bonds of wickedness, to undo the heavy burdens, to let the oppressed go free, and that you break every yoke? Is it not to share your bread with the hungry, and that you bring to your house the poor who are cast out; when you see the naked, that you cover him, and not hide yourself from your own flesh?"
True religion is based on loving God and loving others. It's in the Bible, Matthew 22:27-40, "Jesus said to him, ‘You shall love the LORD your God with all your heart, with all your soul, and with all your mind.’ This is the first and great commandment. And the second is like it: ‘You shall love your neighbor as yourself.’ On these two commandments hang all the Law and the Prophets.”
The love of Christ is the mark of true religion. It's in the Bible, John 13:34-35, NKJV. "A new commandment I give to you, that you love one another; as I have loved you, that you also love one another. By this all will know that you are My disciples, if you have love for one another.”