And while they looked stedfastly toward heaven as He went up… – Acts 1:10

What they did we are very apt to imitate. “Oh,” say you, “I shall never stand gazing up into heaven.” I am not sure of that. Some Christians are very curious, but not obedient. Plain precepts are neglected, but difficult problems they seek to solve. I remember one who used always to be dwelling upon the vials and seals and trumpets. He was great at apocalyptic symbols; but he had seven children, and he had no family prayer. If he had left the vials and trumpets and minded his boys and girls, it would have been a deal better. I have known men marvellously great upon Daniel, and specially instructed in Ezekiel, but singularly forgetful of the twentieth of Exodus, and not very clear upon Romans the eighth. I do not speak with any blame of such folks for studying Daniel and Ezekiel, but quite the reverse; yet I wish they had been more zealous for the conversion of the sinners in their neighborhoods, and more careful to assist the poor saints….I would have you understand all mysteries, brethren, if you could; but do not forget that our chief business here below is to cry, “Behold the Lamb!” By all manner of means read and search till you know all that the Lord has revealed concerning things to come; but first of all see to it that your children are brought to the Savior’s feet, and that you are workers together with God in the upbuilding of His church. The dense mass of misery and ignorance and sin which is round about us on every side demands all our powers; and if you do not respond to the call, though I am not a man in white apparel, I shall venture to say to you, “Ye men of Christendom, why stand ye gazing up into the mysteries when so much is to be done for Jesus, and you are leaving it undone?” O ye who are curious but not obedient, I fear I speak to you in vain, but I have spoken. May the Holy Spirit also speak. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1817.cfm