“Fear not, little flock”: the kingdom here is comfort in travail

From the Holy Gospel according to Luke

Luke 12:32-35
At that time, Jesus said unto His disciples: Fear not, little flock, for it is your Father's good pleasure to give you the kingdom. And so on.

Homily by the Venerable Bede, Priest at Jarrow, and Doctor of the Church.
Bk. iv. Ch. 54 on Luke xii.
The elect are called a little flock, perchance because the reprobate are far more in number than they, but, more probably, because they love to be lowly, since it is God's will that however much His Church should grow in numbers, she should grow with lowliness even unto the end of the world, and should enter lowly into that kingdom which is hers by His promise. That kingdom He promiseth to her here, when He biddeth her to seek only the kingdom of God, and, to comfort her in her travail, He doth so sweetly and so graciously say that her Father will give it to her.

Sell what ye have and give alms. Fear not, He saith, lest, while ye fight for the kingdom of God, ye should lack such things as are needful for this life, nay rather, sell even that which ye have, and give alms. This doth, whosoever for the Lord's sake leaveth all that he hath, and then worketh with his hands, that so he may have to eat, and withal to give alms. In this doth the Apostle boast himself, saying I have coveted no man's silver, or gold, or apparel, as ye yourselves know for these hands have ministered unto my necessities, and to them that were with me. I have showed you all things, how that so labouring ye ought to support the weak. Acts xx. 33, 34, 35.

Provide yourselves bags which wax not old that is to say, by almsgiving, the reward thereof remaineth for ever. Nevertheless, we must not think here that this commandment forbiddeth the Saints to keep money for their own use, and for helping of the poor. The Lord Himself, to Whom Angels ministered, had a bag, and kept therein that which the faithful people gave unto Him John xii. 6, to relieve therewith the need of His disciples, and other poor folk. But we are commanded not to serve God for gain, nor to work unrighteousness for fear of poverty.