Early Church Fathers
From Letter XXVIII1 . (for 356.)
... In order that while He might become a sacrifice for us all, we, nourished up in the words of truth, and partaking of His living doctrine, might be able with the saints to receive also the joy of Heaven. For thither, as He called the disciples to the upper chamber, so does the Word call us with them to the divine and incorruptible banquet; having suffered for us here, but there, preparing the heavenly tabernacles for those who most readily hearken to the summons, and unceasingly, and [gazing] at the goal, pursue the prize of their high calling; where for them who come to the banquet, and strive with those who hinder them, there is laid up both a crown, and incorruptible joy. For even though, humanly speaking, the labour of such a journey is great, yet the Saviour Himself has rendered even it light and kindly.
But let us, brethren, who have received the vineyard from the Saviour, and are invited to the heavenly banquet, inasmuch as the Feast is now drawing nigh, take the branches of the palm 4 trees, and proving conquerors of sin, let us too like those, who on that occasion went to meet the Saviour, make ourselves ready by our conduct, both to meet Him when He comes, and to go in with Him and partake of the immortal food, and from thenceforth live eternally in the heavens.