One of the many strengths and reassurances about God’s kingdom is that it isn’t confined to space, matter, time, or energy. It transcends the finite dimensions of the physical universe we live in, yet the physical universe we live in bears witness to God’s infinite power and resilience of his kingdom.
Everything from the smallest subatomic particles to vast galaxies scream of his existence and the designed order he placed within all of it. Anyone who seriously studies the heavens or the earth or the human lives that God has changed for the better won’t be able to truthfully deny his existence and his power. This is why naysayers have to make up lies in the form of hypotheses, theories, and philosophies to try to establish a basis for trying to tear Christianity down and/or drive it out of society.
Since all of creation testifies about God’s power and since God and his kingdom transcend the confines of this world, it’s impossible for mere anti-God mortals to wipe out the gospel or the followers of Christ completely from all civilization. “Nations rise and fall, dynasties appear and disappear, centuries begin and end, but God’s dominion knows no bound at all.”–E. R. Conder. This is why we can be assured that in every generation, as long as Earth exists, God will always have a remnant of believers standing true to his word and proclaiming it in some form or fashion. David prophetically understood this by the power of the Holy Ghost, who inspired him to write the following words in Psalm 145:
10 All thy works shall praise thee, O Lord; and thy saints shall bless thee.
11 They shall speak of the glory of thy kingdom, and talk of thy power;
12 To make known to the sons of men his mighty acts, and the glorious majesty of his kingdom.
13 Thy kingdom is an everlasting kingdom, and thy dominion endureth throughout all generations…
18 The Lord is nigh unto all them that call upon him, to all that call upon him in truth.
19 He will fulfill the desire of them that fear him: he also will hear their cry, and will save them.
20 The Lord preserveth all them that love him: but all the wicked will he destroy.
21 My mouth shall speak the praise of the Lord: and let all flesh bless his holy name for ever and ever.
Given that humans are curious beings, that we have only scratched the surface of discovering God’s mighty acts that have been done all around us, and that God still reveals himself through mighty acts he does even today–from changed lives to scientific discoveries to supernatural miracles–the Lord will draw humans to himself generation after generation. Guaranteed. Those people won’t be able to resist the spirit-led urge to witness to others. Ultimately, those who falsely believe they can completely destroy us will be the ones who are destroyed in the end. All of that is encouraging and are among the many things that make the Christian life worth living.