Passage
For I would not have you ignorant, brethren, that all our fathers were under the cloud, and all passed through the sea;
For I would not have you ignorant, brethren, that all our fathers were under the cloud, and all passed through the sea;
1 Corinthians 10:1 For I would not have you ignorant, brethren, that all our fathers were under the cloud, and all passed through the sea;
1 Corinthians 10:2 and all were baptised unto Moses in the cloud and in the sea;
1 Corinthians 10:3 and all ate the same spiritual food,
The verse centers on "ignorant", "brethren", "fathers", "under", "cloud", "passed", and "through". It is saying that the verse draws attention to "ignorant" and "brethren", so its meaning should be read from those terms before moving to application.
The next verse adds "and all were baptised unto Moses in...", so "ignorant" and "brethren" should be read forward into that movement. In 1 Corinthians context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "ignorant" and "brethren" with trust shaped by these words, not by a vague optimism outside the passage.