Now as He sat on the Mount of Olives, the disciples came to Him privately, saying, “Tell us, when will these things be? And what will be the sign of Your coming, and of the end of the age?”
And Jesus answered and said to them: “Take heed that no one deceives you. For many will come in My name, saying, ‘I am the Christ,’ and will deceive many. And you will hear of wars and rumors of wars. See that you are not troubled; for all these things must come to pass, but the end is not yet. For nation will rise against nation, and kingdom against kingdom. And there will be famines, pestilences, and earthquakes in various places. All these are the beginning of sorrows.
“Then they will deliver you up to tribulation and kill you, and you will be hated by all nations for My name’s sake. And then many will be offended, will betray one another, and will hate one another. Then many false prophets will rise up and deceive many. And because lawlessness will abound, the love of many will grow cold. But he who endures to the end shall be saved. ~ Matthew 24:3-13
Guard your heart. I’ve often heard this phrase in the context of dating: “Don’t get emotionally entangled. Your heart belongs to God and it’s possible to give it away.” But I don’t think guarding one’s heart has anything to do with dating. It’s far more important than that.