Matthew 7:13, 14
13 “Go in through the narrow gate, because broad is the gate and spacious is the road leading off into destruction, and many are going in through it; 14 whereas narrow is the gate and cramped the road leading off into life, and few are finding it."
However, he also said:
28 "Come to me, all you who are toiling and loaded down, and I will refresh you. 29 Take my yoke upon you and learn from me, for I am mild-tempered and lowly in heart, and you will find refreshment for yourselves. 30 For my yoke is kindly, and my load is light.”
So one quote implies that being a Christian is hard, while the other implies that it is easy. The difference, then, has to be the attitude of the person. The two greatest commandments, which came from the Hebrew Scriptures, was stated by Jesus Christ here:
36 “Teacher, which is the greatest commandment in the Law?” 37 He said to him: “‘You must love Jehovah your God with your whole heart and with your whole soul and with your whole mind.’ 38 This is the greatest and first commandment. 39 The second, like it, is this: ‘You must love your neighbor as yourself.’ 40 On these two commandments the whole Law hangs, and the Prophets.”
LOVE. Jesus' new commandment has a similar but greater application of this powerful command:
John 13:34, 35
34 I am giving you a new commandment, that you love one another; just as I have loved you, you also love one another. 35 By this all will know that you are my disciples—if you have love among yourselves.”
While the Law Covenant commanded to love one's neighbor as oneself, Jesus' new commandment goes a step further for those who love one another: “No one has love greater than this,” he said, “that someone should surrender his soul in behalf of his friends.” (John 15:13)
So the heart attitude is what Jesus, who will be our judge, looks for. Just as we read about his Father:
2 Chronicles 16:9
" For the eyes of Jehovah are roving about through all the earth to show his strength in behalf of those whose heart is complete toward him."
He sees what we are, whether or not we show that we love him first, and our fellow humans, and if we are willing to give our lives for our spiritual brothers and sisters, or, if we are going through the motions in order to avoid punishment.
Jesus said that the one who exercises faith in him, the only begotten Son, whom his Father gave to us out of love, and who obeys him, will not be destroyed, but will have everlasting life. John 3:16-17,36 He prayed to his Father that it means everlasting life to know, or take in knowledge, of the only true God, and of the one who he sent, Jesus Christ John 17:3
God is love, and he lives forever. If we seek eternal life we must imitate him and put faith in his Son, our Lord and Savior, who lives forever.